Ink-fountain for printing-machines.



.I. J. HALLIWELL.

INK FOUNTAIN FOR PRINTING MACHINES.

APPLICATION FILED JULY29, 1913.

1,137,856@ Patented May 4, 1915.

JOHN J. HALLIWE LL, OF NEW YORK, N. Y.,' ASSIGNOR TO B. HOE AND 00., OF NEW YORK, N.- Y., A CORPORATION OF NEW YORK.

INK-FOUNTAIN FOR PRINTING-MACHINES.

Specification of Letters Patent.

Patented May 4, 1915.

Application filed July 28, 1913. Serial No. 781,728.

To all whom it may concern Be it known that 1, JOHN J. HALLIWELL, a citizen of the United States, residing at New York, county of New York, and State of New York, have invented certain new and useful Improvements in Ink-Fountains for Printing-Machines, fully described and represented in the following specificatlon and the accompanying drawings, formlng a part of the same.

This invention relates to improvements in ink fountains for printing machines, and has been designed particularly for use in high speed machines of the rotary type, although constructions embodying the invention may be used in other types of machines, if desired. T

In ink fountains, as now generally constructed, the ink is taken from the fountain by a rotating fountain roll which runs in the ink. In high speed machines the movement of this roll is very rapid, and this rapid movement causes a churning up of the ink, this churning unduly thinning the ink, and, in many instances, causing the ink to overflow from the fountain.

It is one of the objects of the presentinvention to provide an ink fountain of simple and compact design in which the fountain roll is kept out of contact with the ink in the fountain except at a small portion of the periphery of the roll, so that the roll is prevented from churning up the ink and may be operated at a high speed without thinning the ink to an undesirable consistency.

For a full understanding of the invention, a detailed description of one structure embodying'the same will be given in connection with the accompanying drawing in which the figure is a side elevation, partly in section, showing the fountain as used in connection with the distributing cylinder of a rotary printing machine.

In the construction illustrated, the distributing cylinder of the machine is indicated at 1, this cylinder, as usual, dlstributing the ink to form rollers, oneof YVhIClI is indicated at 2, from which the ink 18 delivered to the form cylinder of the machine. Constructions embodying the invention will include an ink reservoir on fountain 3 of any suitable or desirable construction and capacitated to hold the required amount .of

ing. Mounted to rotate, in this fountain is a fountain roll 4 intermittently driven from a rock-shaft 5 suitably mounted in the frame of themachine through suitable connections, not illustrated, as such connections are not necessary for an understanding of the invention. As usual in this type of machine, the ink is taken from the fountain'roll by a vibrating ductor 6 operated from the rockshaft 5, and the ink is delivered by the ductor to the distributing cylinder 1. A suitable doctor or scraper 7 is or may be provided, the same comprising a flexible plate carried in a hinged block 8 suitably mounted in the'frame, this doctor being adjustable to and from the fountain roll by means of set screws 9.

The means employed for keeping the fountain roll out of contact with the ink except for a small portion of its periphery may be varied widely in construction. These means will preferably, however, be of such a character that the ink is kept out of contact with the roll except for a small portion of its periphery near the low part. In the particular construction illustrated, these means include a partition 10 which may be formed integrally with the fountain and located to extend across the fountain be tween the side walls thereof, this partition being in close proximity to the surface of the fountain roll and being preferably curved to coincide with the roll surface, so that as little ink as possible, except that picked up by the roll, shall come between the roll and the partition. This partition extends from the bottom of the fountain above the surface of the ink, and near its bottomso as to be near the low part of the roll, the partition is provided with a feeding slot 11 extending horizontally of the roll, through which ink flows to the roll and is picked up by it, this slot being of suflicient width to'permit the required amount. of ink to feed therethrough. In the best constructions and to prevent ink from getting on the side of the roll opposite the partition, the bottom of the fountain is formed with a ridge or lip 12,'the upper surface of which is in close proximity to the surface of the roll. The slot 11 is, in effect, a throat through which the ink is fed to the desired portion of the periphery of the roll, the ink being kept back from the roll by the partition and lip at the remaining portion of the roll surface. With this construction the roll may be operated at high speed without picking u from the fountain more than the desire quantity of ink and the ink is not churned up and thinned to an undesirable consistency. In the best constructions, the bottom of the fountain is inclined, as at 14, toward the roll to assist in feeding the ink to the roll through the slot in the partition.'

While the invention has been shown and described in simple and compact form, certain'changes and modifications may be: made in the means for preventing the ink from coming in contact with the roll, and it is to beunderstood that such changes and'variations can be made without departing from I the invention.

other side of the feeding opening the surface of 'said lip being adjacent the roll, whereby the roll is kept out of contact with the ink except through the feeding opening.

In testimony whereof, I have hereunto set my hand, in the presence of two subscribing witnesses.

JOHN J. HALLIWELL. Witnesseses:

,. RICHARD KELLY,

HAROLD M. Tmrmcmsr. 

